Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 204,790	$ 189,829
Receivables, net	242,629	248,842
Prepaid expenses	14,498	10,704
Other current assets	24,999	22,913
Total current assets	486,916	472,288
Property and equipment, net	95,599	113,703
Goodwill	120,104	122,303
Intangibles, net	46,034	52,752
Deferred charges and other assets	32,239	33,554
Total assets	780,892	794,600
Current liabilities:
Accounts payable	25,470	30,635
Accrued employee compensation and benefits	76,331	65,267
Current deferred income tax liabilities	84	3,347
Income taxes payable	2,643	2,605
Deferred revenue	31,675	31,255
Other accrued expenses and current liabilities	22,086	25,621
Total current liabilities	158,289	158,730
Deferred grants	9,529	10,807
Long-term income tax liabilities	25,813	28,876
Other long-term liabilities	11,678	12,992
Total liabilities	205,309	211,405
Commitments and loss contingency (Note 16)
Shareholders' equity:
Preferred stock, $0.01 par value, 10,000 shares authorized; no shares issued and outstanding
Common stock, $0.01 par value, 200,000 shares authorized; 44,580 and 47,066 shares issued, respectively	446	471
Additional paid-in capital	283,110	302,911
Retained earnings	288,650	265,676
Accumulated other comprehensive income	4,549	15,108
Treasury stock at cost: 90 shares and 81 shares, respectively	(1,172)	(971)
Total shareholders' equity	575,583	583,195
Total liabilities and shareholders' equity	$ 780,892	$ 794,600